Introduction
Challenger MT285B Compact Utility Tractor
The Challenger MT285B is a compact utility tractor manufactured by Iseki in Matsuyama, Japan, and marketed between 2005 and 2008. It belongs to the Challenger MT200B series, designed for versatile agricultural and landscaping applications.
Engine and Powertrain
The tractor is powered by an Iseki E4CG 2.2-liter, 4-cylinder liquid-cooled diesel engine. It generates a gross power output of 47.5 hp (35.4 kW) and a net power of 44.5 hp (33.2 kW). The fuel system utilizes indirect injection, and the engine is equipped with glow plugs for cold-start assistance. The mechanical configuration features four-wheel drive, power steering, and a mechanical rear differential lock to enhance traction in varied field conditions.
Transmission Options
The MT285B offers three distinct transmission configurations to suit different operational needs. The hydrostatic transmission provides infinite forward and reverse speeds across three ranges. The SynchroShuttle transmission features 8 forward and 8 reverse gears with a mechanical dry disc clutch. The PowerShuttle transmission provides 12 forward and 12 reverse gears, utilizing a partially synchronized system that allows for on-the-go shifting between forward and reverse without using the clutch.
Hydraulics and PTO
The hydraulic system is an open-center type with a main pump flow of 10.5 gpm (39.7 lpm) and a system pressure of 2276 psi (156.9 bar). The rear hitch is a Category I three-point linkage with a lifting capacity of 3483 lbs (1579 kg) at the link ends. The rear power take-off (PTO) is independent, operating at 540 rpm, with an optional mid-PTO available for front-mounted implements.
Dimensions and Operator Station
The tractor is built on a 76-inch wheelbase and offers a minimum width of 65.4 inches. Standard equipment includes a two-post foldable Roll-Over Protective Structure (ROPS), while an air-conditioned cab was available as an optional configuration. Stopping power is provided by wet disc brakes.
Conclusion
The Challenger MT285B is a robust, multi-purpose compact tractor suitable for small-to-medium scale farming and maintenance tasks. Its variety of transmission choices and independent PTO system make it a flexible platform for a wide range of powered implements.
Production Information of Challenger, MT285B
- Built in Matsuyama, Japan
- Compact Utility tractor
| Distributor | Challenger (a part of AGCO) |
|---|---|
| Manufacturer | Iseki |
Dimension and Tires Information of Challenger, MT285B
| Wheelbase | 76 inches [193 cm] |
|---|---|
| Ground clearance | 14.8 inches [37 cm] |
| Height (ROPS) | 89.1 inches [226 cm] |
| Length | 132.7 inches [337 cm] |
| Width | 65.4 inches [166 cm] |
Minimum width
| Ag front | 9.5-16 |
|---|---|
| Industrial front | 10-16.5 |
| Lawn/turf rear | 44x18.00-20 |
| Ag rear | 16.9-24 |
| Industrial rear | 17.5L-24 |
| Lawn/turf front | 27x10.50-15 |
Engine Specifications of Challenger, MT285B
- Iseki E4CG
- Liquid-cooled
- Diesel
- 4-cylinder
| Oil capacity | 8.5 qts [8.0 L] |
|---|---|
| Starter volts | 12 |
| Power (gross) | 47.5 hp [35.4 kW] |
| Coolant capacity | 8 qts [7.6 L] |
| Air cleaner | Dry |
| Pre-heating | Glow plugs |
| Fuel system | Indirect injection |
| Displacement | 134.1 ci [2.2 L] |
| Power (net) | 44.5 hp [33.2 kW] |
| Bore/Stroke | 3.43x3.64 inches [87 x 92 mm] |
| Operating RPM | 1010-2860 |
| Rated RPM | 2600 |
| Compression | 21.8:1 |
Transmission Information of Challenger, MT285B
Transmission variants 1
| Type | Hydrostatic |
|---|---|
| Gears | Infinite forward and reverse (3-range) |
| Oil capacity | 40.2 qts [38.0 L] |
Transmission variants 2
- Four non-synchronized gears in two non-synchronized ranges, with synchronized shuttle shift.
| Transmission | SynchroShuttle |
|---|---|
| Oil capacity | 40.2 qts [38.0 L] |
| Gears | 8 forward and reverse |
| Clutch | Mechanical dry disc |
Transmission variants 3
- Three ranges with four gears each. Transmission can be shifted from forward to reverse on the go, without the clutch. In-range gear changes can be made on the go with the clutch.
| Transmission | PowerShuttle |
|---|---|
| Oil capacity | 40.2 qts [38.0 L] |
| Clutch | Dry main, wet shuttle |
| Type | Partially synchronized with power shuttle |
| Gears | 12 forward and reverse |
- Hydrostatic
- 8-speed
- 12-speed partially synchronized with power shuttle
Mechanical Specs of Challenger, MT285B
- Four-wheel drive
- Wet disc brakes
- Power steering
- Two-post foldable ROPS. Cab optional with air-condtioning.
| Final drives | Spur gear |
|---|---|
| Differential lock | Mechanical rear |
Power Information of Challenger, MT285B
| Rear PTO | Independent |
|---|---|
| Mid PTO Type | 2000 (1.00) |
| Mid PTO(optional) | Independent |
| Clutch | Electro-hydraulic wet disc |
| Rear PTO Type | 540 (1.375) |
Hydraulics Specifications of Challenger, MT285B
| Steering press. | 2276 psi [156.9 bar] |
|---|---|
| Type | Open center |
| Mid valves(optional) | 2 |
| Rear valves(optional) | 2 |
| Capacity | 10 gal [37.9 L] |
| Capacity(optional) | 15.9 gpm (power shuttle/hydro) [60.2 lpm] |
| Pump flow | 10.5 gpm [39.7 lpm] |
| Pressure | 2276 psi [156.9 bar] |
| Pressure(optional) | 5.4 gpm (power shuttle/hydro) [20.4 lpm] |
| Steering flow | 4.4 gpm (sync shuttle) [16.7 lpm] |
| Total flow | 14.9 gpm (sync shuttle) [56.4 lpm] |
Three-Point Hitch of Challenger, MT285B
| Rear Type | I |
|---|---|
| Rear lift (at 24"/610mm) | 3086 lbs [1399 kg] |
| Rear lift (at ends) | 3483 lbs [1579 kg] |
| Control | Position and response control |
| Rear Arms | Telescopic link ends |
| Rear Arms(optional) | Optional top-link draft control |
Electrical System of Challenger, MT285B
| Ground | Negative |
|---|---|
| Battery volts | 12 |
| Battery CCA | 710 |
| Charging system | Alternator |
| Charging amps | 40 |
Where it sits
With 47 HP, the Challenger MT285B sits between MT285 (40 HP) and MT295B (52 HP) in Challenger's range. Its power puts it in the 31th percentile of 2000s models in our database (2822 machines).
Frequently asked questions
How much horsepower does the Challenger MT285B have?
The Challenger MT285B delivers 47 HP.
What years was the Challenger MT285B produced?
The Challenger MT285B was produced in 2005-2008.
What engine does the Challenger MT285B have?
The Challenger MT285B is powered by a Diesel, 4-cylinder engine.
What transmission does the Challenger MT285B use?
The Challenger MT285B uses a Hydrostatic transmission.
Is the Challenger MT285B 4WD?
The Challenger MT285B is available in 4WD.